Type certificate data sheets were originated and first published in what year?

The correct answer is January 1958, as this was the year when the Federal Aviation Administration (FAA) began to standardize and publish Type Certificate Data Sheets (TCDS). These sheets are essential for aircraft certification and provide key information about the aircraft's design, limitations, and operational parameters, ensuring that manufacturers and operators have access to reliable specifications that guide safe operation and compliance with aviation regulations.

Prior to 1958, the process for documenting aircraft design information was less consistent, leading the FAA to implement TCDS as a way to improve clarity and provide uniform guidance across the industry. This move was a significant step forward in enhancing aviation safety and establishing clear standards for aircraft design and operation.